Island



UNITE STATES i PATENT OFFICE.

STEPHEN M. I-IAMBLIN, OF TAUNTON, MASSACHUSETTS, ASSIGNOR OFTHREE-FOURTHS TO WILLIAM H. GOLDSMITH, OF CENTRAL FALLS,

RI-IODE ISLAND.

LOOM-SHUTTLE.

SPECIFICATION forming part of Letters Patent No. 603,603, dated May 3,1898.

Application filed November 4, 1897. Serial No. 657,436. (No model.) 6

more particularly to the devices which areemployed in loom-shuttles forthe purpose of retaining bobbins in place upon the spindles of theshuttles during the working of the latter.

The invention consists in a novel, improved, pnd useful bobbin-retainerand support there- The invention will be described first with referenceto the accompanying drawings, in which latter I have illustrated thebest embodiment of the same which I yet have con trived, after which thedistinguishing and. characteristic features thereof will be particularlypointed out and distinctly defined in the claims at the close of thisspecification.

Figure 1 of the drawings shows,-partly in side elevation and partly invertical section, a portion of the length of a loom-shuttle havingapplied thereto an old form of bobbin-retainer which my invention isdesigned to re- Fig. 2 is a perspective of the said old place. form ofbobbin-retainer detached. Fig. 3 is a view similar in character to Fig.1, showing my invention applied. Fig. 4.- is a perspective of myimproved bobbin-retainer and support therefor detached.-

In the said drawings, 1, Figs. 1 and 3, des-.

ignates the shuttle-body. I 2, in the same figures, designates thespindle of the shuttle.

3, same figures, designates the bobbin,which,

with its load of weft 4;, is placed upon the spindle 2.

5 is the groove in the bobbin-head, into which enters thebobbin-retaining device.

Many devices have been contrived heretofore for the purpose of retainingbobbins in place upon the spindles of loom-shuttles while the latter arein use, and a variety of such devices is employed in practice at thepres out time. in practice thus far are open to the objection that theyoccasion more or less injury to the head of the bobbin by bruising,chipping, or

breaking the said head. The most common of these devices is shown inFigs. 1 and 2 at 6. It consists of a stifi strip of steel, as 61, thatis held by a screw 7 within a shallow depression 8 in the material ofthe shuttle-body, the said depression being formed lengthwise of theshuttle-body and adjacent to one end thereof. The said screw 7 passesthrough a hole 9 in the strip 61, which latter is widened adjacent tosaid hole, as by substantially semicircular lateral enlargements 62 62.The depression 8 in the material of the shuttlebody opens at its innerend into the large cavity 10 of the shuttle, and the inner end of thestrip 61 projects into the said cavity, the said end being formed orprovided with a raised flange 63, having-a concave edge 64 to enter thegroove 5 in the bobbin-head. The bobbin having been slipped onto theupraised spindle, as the spindle and bobbin are lowered together intothe cavity 10 of the shuttlebody the said flange enters the said groove.However, it happens frequently in practice that through some slightmisplacement of the bobbin, or for other reasons, the bobbin-holdingflange 63 does not enter fairly into the groove 5 in the bobbin-head,and hence instead of the said flange entering the groove it strikes moreor less squarely against the enlarged head of the bobbin at one side ofthe groove, thereby injuring the said head. Sometimes the catch fitssotightly in the groove that as the bobbin is being raised for the purposeof being removed and replaced,

All thereof which I have met with or for some other reason, the catchbears against one side of the groove with sufficient force to break orsplinter the head of the bobbin. This tendency to break or otherwiseinjure the head of the bobbin results in part from incapacity of the oldforms of catches or bobbin-retaining devices to adjust or adaptthemselves to the position of the bobbingroove and in part also to thefact, which is most clearly apparent in the case of the springcatch thatis shown in Figs. 1 and 2, that they practically are fixed absolutely,while in being raised or lowered the bobbin-head moves in a curved paththrough an arc of a greater or a less extent.

One object of the invention is to provide an efficient and satisfactorybobbin-retaining device which shall be free from all tendency to breakor otherwise injure the heads of bobbins.

A second object of the invention is to provide for securing thebobbin-retaining device conveniently in place within the body of aloom-shuttle.

A third object of the invention is to facilitate the application of theimproved form of bobbin-retaining device to loom-shuttles having the oldform of spring-catch to which reference has been made in connection withFigs. 1 and 2, the said new form of bobbin-retaining device being madeto replace the said springcatch.

My improved bobbin-retaining device and support therefor, which I havecontrived for the purpose of attaining the objects which have been justrecited, are shown in Figs. 3

and 4 of the drawings. The improved bobbin-retainer is designated 11 inFig. 4. It consists, as shown, of a bail or loop which is curved tocorrespond with the curvature of the head of the bobbin, and is shapedand proportioned to fit within the groove 5 of the bobbin-head. The saidbail or loop is formed or provided with journals or pivots 12 12, bymeans of which it is connected pivotally with its support on oppositesides of the spindle and bobbin, the body of the bobbin-retainer hangingor depending freely from the said journals and being free to swingreadily thereon, so as to render it self-adjusting and'enable it therebyto conform to the position and movement of the portion of thebobbin-head with which it coacts.

In practice, a bobbin 3 having been placed on the spindle 2 and pressedfully home thereon, on lowering the spindle and bobbin to gether intothe cavity of the shuttle-body the swinging bail 11 passes readily intothe groove 5 in the bobbin-head. In consequence of being mounted toswing with freedom on its journals or pivots 12 12, the loop or bail 11adapts itself at all times to the movement of the bobbin-head and to theposition of the groove 5 thereof. In the descent of the bobbin into theshuttle-cavity the side positions of the bail or retainer at or adjacentto the journals 12 12 enter first into the groove 5 of the bobbin-head,and as they are received more fully into the said groove in thecontinued lowering of the spindle and bobbin into the shuttle-cavity theretainer adapts and accommodates itself completely to the position ofthe said groove as the bobbin swings downward, thus seatingitselfproperly within the said groove. The bail or retainer 11 clasps andencircles the lower half of the head of the bobbin within the groove 5,and thus the extent of the engagement of the same with the bobbin-headis sufficiently great to insure adequate retention of the bobbin underall circumstances.

For the purpose of connecting the bobbinretainer with the shuttle-bodyand supporting it in place therein I connect the loop or bail by meansof its journals or pivots 12 12 with the upwardlyextending arms 13 13,which latter are formed at one end of a strip of metal 14. The saidstrip 14 is secured to the shuttle-body by means of a screw 15, as inthe case of the catch 6 of Figs. 1 and 2, and as in the case of the saidcatch the strip 14 fits within a depression 16,which is provided orformed therefor in the material of the shuttle body, the end of the saidstrip to which the bobbin-retainer is connected extending into the maincavity of the shuttlebody and sustaining the bobbin-retainer in properposition with relation to the spindle and the head of the bobbin, whichis mounted upon the spindle, as indicated in Fig. 3. The screw 15 passesthrough a hole l4l,which is made in the strip 14, and at the oppositesides of the said hole the strip preferably is formed with theapproximately semicircular ceived, I preferably give to the body of thestrip 14 the same form and dimensions as are possessed by the strip 61of Figs. 1 and 2, and I secure it to the shuttle-body in the same mannerand by the same means as in the case of the latter. This enables me, ifdesired, to remove the catch 6 of Figs. 1 and 2 from loomshuttles now inuse or already in condition for use, and replace it by thebobbin-retainer 11 and support 14, which are represented separately inFig. 4.

I do not claim, per se, the bobbin-retainer constituted of a swingingbail or loop, inasmuch as that is made the subject of claim in myapplication for United States Letters Patent, filed October 16, 1897,Serial No. 655,428.

I claim as my invention- 1. The improved bobbin-retaining deviceconsisting of the depending bail or loop, combined with the supportconsisting of the strip fitted for application to a shuttle-body andprovided with the opposite vertically-projecting arms to which theopposite ends of the said bail or loop are journaled or pivoted torender it self-adjusting and capable of conforming itself to theposition and movement of the portion of the bobbin-head with which itcoacts, substantially as described.

2. The improved bobbin-retaining device consisting of the depending bailor loop, combined with the support consisting of the strip fitted forapplication to a shuttle-body, provided with the oppositevertically-extending arms to which the opposite ends of the said Intestimony whereof I affix my signature in presence of two witnesses.

STEPHEN M. HAMBLIN.

Witnesses:

WILLIAM H. GOLDSMITH, LELLAN J. TUcK.

